The DPT-RP1 offers a similar 13.3-inch display as its predecessor, but dramatically improves the resolution from 1200 x 1600 dots to 1650 x 2200 dots. The screen is a "non-slip" panel, which the company says will improve the experience of annotating documents with the included digital pen. The new design is also thinner, lighter, and faster than the previous version; Sony notes that the entire device is roughly as thick as a stack of 30 pages of paper.

I love e-paper and e-ink displays, but other than serving their purpose on e-reader devices, it seems the technology hasn't progressed towards more generic use cases such as smartphones and tablets.